Epson DFX 9000
Revision B
Troubleshooting
Troubleshooting
116
Some dots are missing, or unnecessary dots are printed.
(
NOTE:
If the printed characters are uneven on their upper or
lower edges, refer to
Page 117
.)
Perform the following, checking for functionality after each step.
1. Clean or Replace the
CES SCALE (p.159)
.
2. Check that the CARRIER CABLE UNIT is correctly connected to the ROM
BOARD and the PRINT HEAD.
3. Replace the
CARRIER CABLE UNIT (p.189)
.
4. Replace the
PRINT HEAD (p.152)
.
5. Replace the
ROM BOARD (p.137)
.
The printout is spaced incorrectly.
1. Check that the APTC adjustment operates normally, and that the paper thickness
adjustment is properly set.
2. Perform the
Bi-D adjustment (p.250)
.
3. Clean and lubricate the STAY SHAFT (
Carrier oil pads (p.267)
.
4. Clean or replace the
CES SCALE (p.159)
.
5. Check the
CR drive belt (SP BELT) tension adjustment (p.220)
.
6. Replace the
SP BELT (p.158)
.
7. Replace the
SP MOTOR ASY (p.156)
.
8. Replace the
ROM BOARD (p.137)
.
Printing-related failure
Troubleshooting procedure
Summary of Contents for DFX-9000
Page 1: ...EPSONDFX 9000 Serial Impact Dot Matrix Printer SEDM04003 SERVICE MANUAL ...
Page 8: ...C H A P T E R 1 PRODUCT DESCRIPTION ...
Page 61: ...Epson DFX 9000 Revision B Product Description Dimensions and weight 54 ...
Page 62: ...C H A P T E R 2 OPERATING PRINCIPLES ...
Page 99: ...Epson DFX 9000 Revision B Operating Principles Circuit operation 92 ...
Page 100: ...C H A P T E R 3 TROUBLESHOOTING ...
Page 104: ...Epson DFX 9000 Revision B Troubleshooting Overview 97 Mechanism initialization e e e e e ...
Page 107: ...Epson DFX 9000 Revision B Troubleshooting Overview 100 PAPER FEEDING FF APG APPROACH ...
Page 130: ...C H A P T E R 4 DISASSEMBLY AND ASSEMBLY ...
Page 218: ...C H A P T E R 5 ADJUSTMENT ...
Page 263: ...Epson DFX 9000 Revision B Adjustment Additional functions 256 ...
Page 264: ...C H A P T E R 6 MAINTENANCE ...
Page 286: ...C H A P T E R 7 APPENDIX ...
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Page 324: ...EPSON DFX 9000 Revision B Appendix Component Layout 317 7 4 Component Layout ...
Page 333: ...EPSON DFX 9000 Revision B Appendix Parts list 326 ...